[$] Programming in Unison
Unison is a MIT-licensed programming language, in development since 2013, that explores the ramifications of making code immutable and stored in a database, instead of a set of text files. Unison supports a greatly simplified model for distributed programming — one that describes the configuration of and communication between programs in the same language as the programs themselves. Along the way, it introduces a new approach to interfacing with programming languages, which is tailored to its design.